<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title></title>
  <link rel='stylesheet' href='./layout.css'>
</head>
<body>
  <div id="main">
    <label>宽度：</label>
    <input type="text" id="width">
    <br>
    <label>高度：</label>
    <input type="text" id="height">
    <br>
    <label></label>
    <input type="button" id="calc" value="计算">
    <br>
    <label>周长：</label>
    <input type="text" id="perimeter" disabled>
    <br>
    <label>面积：</label>
    <input type="text" id="area" disabled>
    <br>
  </div>
  <script src='//apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js'></script>
  <script src="https://cdn.jsdelivr.net/gh/wangding/i@gh-pages/js/fork-me-github.js"></script>
  <script src='./main.js'></script>
</body>
</html>
